Steam-boiler furnace



(No Model.) 2 Sheets-Sheet 1. J. L. GILL, Jr. STEAM BOILER PURNAGE. No.L108,098. Patented Ju1y`80, 18898.

Emy/1 il li g1 Ii I l l i (No Model.) 2 SheetsHSheet 2.. J. L. GILL, Jr.

- STEAM BOILER PURNAGE. No. 408,098. Patented July 30, 1889.

UNITED STATES PATENT OFFICE.

JOHN L. GILL, JR., OF PHILADELPHIA, PENNSYLVANIA.

STEAM-BOILER FU RNACE.

SPECIFICATION forming part of Letters Patent No. 408,(598, dated July30, 1889.

`Application filed October 3,1888. Serial No. 287,085. (No model.)

.To all whom i may concern:

Be it known that I, JOHN L. GILL, J r., a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements in Fluesfor Distributing Draft Effect to Steam-Boilers Having One Chimney inCommon; and I do hereby declare the following to be a sufficiently full,clear, and exact description thereof as to enable others skilled in theart to make and use said invention.

This invention relates to fines for dischargingproducts of combustionfrom several nests of boilers, and has for its object the equaldistribution and regulation of draft effect upon each boiler withoutaffecting the draft of others and the facility of alternatelydischarging the products of combustion either directly into theatmosphere or through a water-heating apparatus known as an economizer.

While there are shown in the drawings other novel features besides theseherein claimed, those' which are properly a part of the construction andarrangement of boiler houses are herein' shown only to better illustratethis invention, but are the subject of the claims of another applicationfor Letters Patent filed October 8, 1888, and serially numbered 287,084.

To effect these desiderata, this invention consists of the arrangementand combination of flues with passages for access thereto, chimneys, anddampers,hereinafter described, and shown in the accompanying` drawings,in which- Y Figure l shows a transverse vertical sec# tion of athree-story boilerfhouse and steamgenerating plant embodying thisinvention, and Fig. 2 is a rear View vertical section of a boiler-plantin the same boiler-house. The saine reference-marks indicate like partsin both figures.

A', A2, A3, and A4 represent boilers or steamgenerators resting on theground-floor, and may be either water-tube boilers or returntubulars.B', B2, B3, and B4 are steam-generators in similar settings on thesecond iioor.

G' and C2 are nests of economizers on the third ioor.l

D is a chimney, which may be made of metal throughout or masonrythroughout, but preferably in brick or masonry extending above theroof-line of the building, and there may be contracted and supplementedby a cylindrical metallic stack D.

D is the extension of the chimney above the roof, which may be made ofmetal or masonry. Y

D2 are vertical divisions of the fines E' E2 E3 E4 and F', F2, F3, andF4, which are desirable but not essential.

D3 is a partition-wall which extends centrally from the bottom of thechimney to a point above the level of the secoud--story battery ofboilers, or, in the case of the economizers being used, to a point.above the level of the upper part of the economizers C and C2.

E', E2, E3, and E*L are flues leading laterally from the furnaces A',A2, A2, and A4 to the base of the stack D, which is expanded at thepoint of the intersection of the flues F', F2, F2, and F4, so that atthis point the chimney is equal in cross-sectional area to the severaliues E', E2, E2, and E4 and F', F2, F2, and F4.

Beneath the fines E', E2,E2, and Efl and F', F2, F3, and F4, and betweenthe rear of the boiler-settin gs and the outer wall of the building, arepassage-ways R and R for access to the rear of the boilers and fluesthrough doors (marked S and S') opening from said passages R and R' intothe rear of the boiler furnaces or settings.

G G are lateral lines for conducting the heat and waste gases from thechimney to the rear end of the economizers.

G G are openings in the stack, through which the gases pass into thellues G G.

H II are dampers, which close the openings G when in a vertical positionand allow the products of combustion to directly ascendthe stack D, orwhen in a cross position close the stack above the opening G', so as toturn the gases into the flues G G. By the arrangement shown eachboiler-furnace delivers its products of combustion through alateral flueinto the chimney D in the direction of the draft of the chimney.

The partition D3 prevents the upward current of the gases from beingbroken by meeting volumes of cooler and unexpanded air or gas, and incombination with the damper H IOO the products of combustion aredirected into the economizer (when one is used) in the manner shown,avoiding all descending drafts. Thus the products of combustion aredirected and conveyed from each furnace withoutrisk of interference fromthe operation of any of the other furnaces.

Having described this invention and the operation thereof, what I claimisl. In steam-boiler furnaces, the combination of the chimney D, havinga partition D3, dividing the same to a point above the highestboiler-setting, with lateral `hues leading from each furnace andterminating in a vertical iiue in the chimney D, substantially as setforth and shown.

2. In steam-boiler furnaces, the cliimneyD, in combination with lateralfiues E E2 and F and F2, terminating vertically in the chimney D, Withthe eeonomizer C', located above the boilerfurnaces and provided with adamper H, arranged to alternately direct the products of Acombustionthrough the econonlizer in one adjustment or to discharge them directlythrough the chimney, substantially as shown and described.

In steam-boiler furnaces, the combination of a series of lateral finesEl E2 E3 E4 and E, F2, F3, and F4 with the passage-Ways Rand R undersaid fiues for access to the rear of therboiler tubes and settings,arranged substantially as shown and described.

JOHN L. GILL, JR.

W'itnesses:

S. LLOYD WIEGAND, JAMES P. PETIT.

